MY RHEUMATOLOGIST IS AMAZED AT HOW IMPROVED I AM! This is the only desk I have....got rid of the old desk! Sitting for 8 - 10 hrs a day was taking a toll on me, hips hurt and it was miserable standing up after sitting for a couple of hours. Got the TrekDesk and boy have things changed. I started out slow not sure if I could work, write and speak on phone while walking....it was a breeze no problem at all. Started out at around 2 or 3 miles per day....now I'm up to 8-10 miles per day. I've been able to complete stop taking all anti-depressants that I had been on for 8 yrs, with my doctors approval. No more hip pain, no more sleeping pills (which were a nightly thing). My rheumatologist is amazed at how improved I am, he's thinking of getting one himself....made sure I told the staff and showed them pics my TrekDesk. I can't say enough good things about the desk. Having a rough day......I take a walk!